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cover of episode Anglerfish Ancestors Once Roamed The Seafloor

Anglerfish Ancestors Once Roamed The Seafloor

2025/6/4
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Short Wave
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Elizabeth Miller
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Emily Kwong
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Narrator
一位专注于电动车和能源领域的播客主持人和内容创作者。
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Rose Fauché
Topics
Narrator: 我第一次在荧幕上看到鮟鱇鱼，它以温暖的光芒出现，给我留下了深刻的印象。 Rose Fauché: 小时候看《海底总动员》时，我被鮟鱇鱼吓哭了，但现在我参与了关于它们的研究，对它们有了新的认识。我在研究中负责观察鮟鱇鱼头骨的形态，并使用CT扫描将鮟鱇鱼骨骼制作成3D模型，并在每个头骨模型上标记了111个地标点。这个过程非常耗时，但是也让我对鮟鱇鱼的形态有了更深入的了解。 Elizabeth Miller: 深海鮟鱇鱼有超过200个物种，它们的形态各异，生活在黑暗、高压、寒冷且食物匮乏的深海中，但它们却演化出了多样性。我们构建系统发育树，需要从样本组织中提取DNA，这对于鮟鱇鱼来说比较困难。鮟鱇鱼的直接祖先可能看起来像海蟾鱼，但也许是介于两者之间的形态。鮟鱇鱼从海底进入水体，可能因为那里有新的生存方式和生态机会，所以它们进化出了新的形态来利用这些机会。研究鮟鱇鱼对于理解多样性进化的条件至关重要，深海也是一个可以进化出大量生物多样性的地方。 Emily Kwong: 本期节目探讨了鮟鱇鱼形态各异的原因以及这对深海的意义，让我们对这些奇特的生物有了更深入的了解。

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There are over 200 species of deep-sea anglerfish; some are long and thin, some are squat and round, some have fins that they use to "walk" along the sea floor, and others have huge eyes set far back into their heads. But how did all this morphological diversity first come to be? Thanks to a new anglerfish family tree, now we know. Scientists built this evolutionary tree using genetic information from hundreds of samples and anglerfish specimens across the globe. It indicates that anglerfish originated from an ancestor that crawled along the seafloor ... and sheds new light on how experts could think about biodiversity as a whole.Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)